The simple answer to your question is no. A couple things you should get:
Hey thanks for the detailed reply.
1) A basketball game is NOT sustained.
If you look at NBA players within the first 5 minutes of the game, all the starters are sweating heavily. What does that tell us? They are sweating because....... ? It's aerobix.. right? But lets say we're not talking about NBA with it's myriad breakages for the sake of television. Say we're talking about the London olympics where the breaks are more abbreviated in the traditional manner if that helps.
2) Second, you are not understanding the differences and overlaps between energy systems. Great aerobic shape does not allow you to keep the "OFF" switch on the anerobic energy system. At the beginning of a middle distance race (ie. 400m, 800m, etc) your body begins by using the quickest energy system possible. The body doesn't say "Oh I'm running an 800m let me leave this free ATP in the cell and go start using my aerobic capacity". At the beginning of activity the body will begin to use free ATP, creatine phosphate and other quick energy pathways. After these are used up the body will start to get energy from aerobic respiration and glycolysis. If a lot of energy is needed glycolysis will dominate and the body will produce lactate which will cause the athlete to "hit the wall or tighten up". If a lot of energy is not needed the body will primarily be using aerobic pathways which produce much much more ATP and will last a lot longer. If you ever sprint the knowledge of these pathways is very important, they are why you run the 400m in the following way:
Taking your sprinting example, the basketball player is constantly switching between these energy systems, even more violently than the 400m sprinter you described. He has to go from rest to full speed, and everywhere in between during games. So a player who plays a full game better be able to sustain ~1hr of running effortlessly since that's expected of all the athletes on the court. You don't get to slow down since that will cost you games. Yes there are breaks inbetween, but that's balanced out with having to exert full effort so often that it probably helps to stay aerobic 91% rather than 88% (just to use your numbers).
It just seems to me that as a sprinter you have a very strong bias for anaerobic activities, which I understand and respect but this is clouding your judgement that basketball requires a solid aerobic base. I'm willing to bet every decent player at higher levels has a great aerobic base, and if they didn't they'd not be very competitive. It's probably taken for granted that someone who plays D1 like you mentioned earlier, has got the aerobic base already, and over the years of playing basketball has adapted to the aerobic demands of the game. I've read in several places that basketball is a mainly aerobic game, and even though I don't have the studies, i'm betting those who claimed it must have seen them.
As far as your randomised intervals go, i bet they will help someone with a good aerobic base from becoming better conditioned for basketball. Definitely. But if they didn't have a good aerobic base, they'd quickly find themselves running slow and the intervals wouldn't be as useful as running for 25-30 minutes at aerobic effort.
Btw can I ask you to comment on sprinters coming back from a season break, and building up an aerobic base first by running longer distances before they go on to train the specific max effort sprints? I read that's how Charlie Franscis trained his sprinters.